Question

1. When will you say a body is in (i) uniform acceleration? (ii) non-uniform acceleration?
2. A bus decreases its speed from 80 km h-1 to 60 km h-1 in 5 s. Find the acceleration of the bus.
3. A train starting from a railway station and moving with uniform acceleration attains a speed 40 km h-1 in 10 minutes. Find its acceleration.
4. What is the nature of the distance-time graphs for uniform and non-uniform motion of an object?
5. What can you say about the motion of an object whose distance-time graph is a straight line parallel to the time axis?
6. What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?​

Answer 1

Answer:

1. A body is said to be in uniform acceleration when it is increasing its speed equally in equal intervals of time. A body is said to be in non uniform acceleration when it is increasing unequal amount of speed in equal intervals of time.

Explanation:

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